|
#1
|
||||
|
||||
I just tried ungrounding the case by unsoldering the wire at the soldering lug and it made no difference. I'm not too concerned about it because measuring small caps isn't what I got it for. The problem is that on the lowest cap range the eye stays open without anything connected or a small cap regardless of the capacitance dial setting. I just noticed that if a put a large enough cap on the measuring terminals the eye will close. I think that since there is so little current flowing when 60 Hz is put thru a small cap that if the old wiring, switches, etc. is leaky the current gets lost. At 60Hz a 200 pf cap has an impedance of about 13 Mohm.
|
#2
|
||||
|
||||
Quote:
jr Last edited by jr_tech; 05-10-2014 at 10:24 PM. |
#3
|
||||
|
||||
Yes, replacing the 200 pF cap was one of the first things I tried. The mica cap that was in there wasn't the problem. Well, that does make me wonder if the switch contact is bad. I'll have to check that again sometime.
|
|
|